[hibernate-dev] Naming strategies and join tables

[Steve Ebersole]

It is also important to understand that lots of Hibernate code calling into
NamingStrategy did so in quite inconsistent ways.  We decided that
consistency of the calling was more important moving forward.  So while
ImplicitNamingStrategyLegacyJpaImpl strives to be compatible with the
older EJB3NamingStrategy,
we won't do that at the compromise of consistency in the calls.

Step into ImplicitNamingStrategyLegacyJpaImpl#determineJoinTableName and
find out:
1) where this particular call is coming from
2) what information is passed in




On Mon, Feb 22, 2016 at 6:34 AM Guillaume Smet <guillaume.smet at gmail.com>
wrote:

> Important point: AbstractProjet uses SINGLE_TABLE inheritance.
>
> On Mon, Feb 22, 2016 at 12:10 PM, Guillaume Smet <guillaume.smet at gmail.com
> >
> wrote:
>
> > Hi,
> >
> > I'm migrating another application to 5.x and have the following issue
> with
> > the new naming strategies.
> >
> > We used EJB3NamingStrategy and are now using
> > ImplicitNamingStrategy*Legacy*JpaImpl which is advertised as being its
> > replacement.
> >
> > The model is the following:
> > @Entity
> > AbstractProjet
> >        > @Entity
> >           @DiscriminatorValue(value = "ProjetDiffusion")
> >            public class ProjetDiffusion extends AbstractProjet {
> >                  @ElementCollection
> >                  @Enumerated(EnumType.STRING)
> >                  @JoinTable(uniqueConstraints = {
> > @UniqueConstraint(columnNames = { "projetdiffusion_id", "technologies"
> }) })
> >                  private List<ProjetTechnologie> technologies =
> > Lists.newArrayList();
> >
> > Before the upgrade to 5, the join table was called
> > projetdiffusion_technologies and the column was projetdiffusion_id.
> >
> > After the upgrade to 5, the join table is called
> > abstractprojet_technologies and the column abstractprojet_id. Thus, we
> have
> > an error on the creation of the unique constraint.
> >
> > Is this change expected?
> >
> > --
> > Guillaume
> >
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